linux-kernel - Re: [PATCH -mm] ssb: Make pcmciahost depend on PCMCIA=y

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Message-Id: <200709121209.10068.mb@bu3sch.de>
Date:	Wed, 12 Sep 2007 12:09:09 +0200
From:	Michael Buesch <mb@...sch.de>
To:	Paul Mundt <lethal@...ux-sh.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm] ssb: Make pcmciahost depend on PCMCIA=y

On Wednesday 12 September 2007 04:11:00 Paul Mundt wrote:
> SSB uses a bool (SSB_PCMCIAHOST_POSSIBLE) to determine whether to
> build in PCMCIA support or not, as the PCMCIA host code itself is
> also only a bool, make SSB_PCMCIAHOST_POSSIBLE depend on PCMCIA=y.
> 
> Without this, SSB_PCMCIAHOST_POSSIBLE evaluates to y when PCMCIA
> is built as a module, which results in link errors due to the
> pcmcia_access_configuration_register() accesses, where the symbol
> is only defined in a module.
> 
> Signed-off-by: Paul Mundt <lethal@...ux-sh.org>
> 
> --
> 
>  drivers/ssb/Kconfig |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- linux-2.6.23-rc4-mm1.orig/drivers/ssb/Kconfig	2007-09-11 15:15:52.000000000 +0900
> +++ linux-2.6.23-rc4-mm1/drivers/ssb/Kconfig	2007-09-12 10:51:53.000000000 +0900
> @@ -37,7 +37,7 @@
>  
>  config SSB_PCMCIAHOST_POSSIBLE
>  	bool
> -	depends on SSB && PCMCIA && EXPERIMENTAL
> +	depends on SSB && PCMCIA=y && EXPERIMENTAL
>  	default y
>  
>  config SSB_PCMCIAHOST
> 
> 

There we go. The usual SELECT dependency hell again...
Would changing SSB_PCMCIAHOST_POSSIBLE to tristate also fix it?
What would be the sideeffects?

I think this PCMCIA=y is not good, because it's perfectly
legal to build PCMCIA as module, while SSB and everything
that depends on SSB is also a module.
Would tristate fix that?

-- 
Greetings Michael.
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